a-a a-b aaa aab aad aag aan aao aau ab- aba abb abd abg abn abo abu ad- ada adb add adg adn ado adu ag- aga agb agd agg agn ago agu an- ana anb and ang ann ano anu aoa aob aod aog aon aoo aou au- aua aub aud aug aun auo b-u baa bab bad bag ban bao bau bba bbb bbd bbg bbn bbo bbu bda bdb bdd bdg bdo bdu bga bgb bgd bgg bgn bgo bgu bna bnb bnd bng bnn bno bnu boa bob bod bog bon boo bou bua bub bud bug bun buo buu daa dab dad dag dan dao dau dba dbb dbd dbg dbn dbo dbu dda ddb ddd ddg ddn ddo ddu dga dgd dgg dgn dgu dna dnb dnd dng dnn dno doa dob dod dog don doo dou dua dub dud dug dun duo g-d gaa gab gad gag gan gao gau gba gbd gbg gbn gbo gbu gda gdb gdd gdn gdo gdu gga ggb ggd ggg ggn ggo ggu gna gnb gnd gnn gno gnu goa gob god gog gon goo gou gu- gua gub gud gug gun guo guu naa nab nad nag nan nao nau nba nbb nbd nbg nbn nbo nbu nda ndb ndd ndg ndn ndo ndu nga ngb ngd ngg ngn ngo ngu nna nnb nng nnn nno nnu no- noa nob nod nog non noo nou nua nub nud nug nun nuo nuu oaa oab oad oag oan oao oau ob- oba obb obd obg obn obo obu oda odb odd odg odn odo odu oga ogd ogg ogn ogo on- ona onb ond ong onn ono onu oo- ooa oob ood oog oon ooo ou- oua oud oun ouo ua- uaa uab uad uag uan uao uau uba ubb ubg ubn ubo ubu uda udb udd udg udn udo udu uga ugb ugg ugn ugo ugu un- una unb und ung unn uno unu uoa uob uod uog uon uoo uua uug uun uuu